[Bug 879334] Re: nfsd from nfs-kernel-server very slow and system load from 25%-100% from nfsd

[Tom Vijlbrief]

I converted my NFS server (which started life many Ubuntus ago,
probably as a 7.04 server) to v4 exports which solved my problem.

A newer Ubuntu server installation works fine as v3 server, so the
problem is probably caused by some old left over configuration
files....

2011/12/16 Nobuaki Nakamura <879334 at bugs.launchpad.net>:
> in kernel 3.0.0-14-server too.
>
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> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/879334
>
> Title:
>  nfsd from nfs-kernel-server very slow and system load from 25%-100%
>  from nfsd
>
> Status in “nfs-utils” package in Ubuntu:
>  Confirmed
>
> Bug description:
>  I have a diskless ubuntu 10.10 machine which I boot regularly using
>  pxe-boot from another ubuntu machine where I have the root filesystem
>  of the diskless machine exported over nfs.
>
>  I set it up about a year ago using 10.10. In the mean while the server
>  machine got upgraded to 11.04 and as of yesterday to 11.10.
>
>  After the upgrade to 11.10 the diskless machine is dead slow (most of
>  the times it wont even boot completely) and the load on the server
>  machine is high (25%-100% as shown from top). If in the middle of the
>  diskless computer booting I do a restart of the nfs server, the client
>  computer proceeds with the boot a bit more and then it gets stuck
>  again. I have to restart and nfs-server 3-4 times in order to get the
>  gdm login screen at the client machine
>
>  ProblemType: Bug
>  DistroRelease: Ubuntu 11.10
>  Package: nfs-kernel-server 1:1.2.4-1ubuntu2
>  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
>  Uname: Linux 3.0.0-12-generic i686
>  ApportVersion: 1.23-0ubuntu3
>  Architecture: i386
>  Date: Fri Oct 21 12:53:02 2011
>  ProcEnviron:
>   LANG=en_US.UTF-8
>   SHELL=/bin/bash
>  SourcePackage: nfs-utils
>  UpgradeStatus: Upgraded to oneiric on 2011-10-20 (1 days ago)
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/nfs-utils/+bug/879334/+subscriptions

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https://bugs.launchpad.net/bugs/879334

Title:
  nfsd from nfs-kernel-server very slow and system load from 25%-100%
  from nfsd

Status in “nfs-utils” package in Ubuntu:
  Confirmed

Bug description:
  I have a diskless ubuntu 10.10 machine which I boot regularly using
  pxe-boot from another ubuntu machine where I have the root filesystem
  of the diskless machine exported over nfs.

  I set it up about a year ago using 10.10. In the mean while the server
  machine got upgraded to 11.04 and as of yesterday to 11.10.

  After the upgrade to 11.10 the diskless machine is dead slow (most of
  the times it wont even boot completely) and the load on the server
  machine is high (25%-100% as shown from top). If in the middle of the
  diskless computer booting I do a restart of the nfs server, the client
  computer proceeds with the boot a bit more and then it gets stuck
  again. I have to restart and nfs-server 3-4 times in order to get the
  gdm login screen at the client machine

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: nfs-kernel-server 1:1.2.4-1ubuntu2
  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
  Uname: Linux 3.0.0-12-generic i686
  ApportVersion: 1.23-0ubuntu3
  Architecture: i386
  Date: Fri Oct 21 12:53:02 2011
  ProcEnviron:
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: nfs-utils
  UpgradeStatus: Upgraded to oneiric on 2011-10-20 (1 days ago)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/nfs-utils/+bug/879334/+subscriptions